powerpc/booke: don't reinitialize time base

For some reason long ago I decided that we should zero out the time base
when we calibrate the decrementer.  The problem is that this can be
harmful in SMP systems where the firmware has already synchronized the
time bases on the various cores.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

1 files changed, 0 insertions, 4 deletions

diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index c73fc33aa817..eb938808ddfb 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -742,10 +742,6 @@ void __init generic_calibrate_decr(void)
         }
 
 #if defined(CONFIG_BOOKE) || defined(CONFIG_40x)
-        /* Set the time base to zero */
-        mtspr(SPRN_TBWL, 0);
-        mtspr(SPRN_TBWU, 0);
-
         /* Clear any pending timer interrupts */
         mtspr(SPRN_TSR, TSR_ENW | TSR_WIS | TSR_DIS | TSR_FIS);